1. Effect of Viscosity on the Hydrodynamics of Liquid Processes in Microchannels.
- Author
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Su, Yuanhai, Chen, Guangwen, and Yuan, Quan
- Subjects
VISCOSITY ,MICROREACTORS ,MASS transfer ,HEAT transfer ,CHEMICAL processes - Abstract
The hydrodynamics of single-phase liquid flow with relatively high fluid viscosities in a microchannel was investigated experimentally. The results showed that the conventional theory could predict the single-phase flow with high fluid viscosities in microchannels. Furthermore, the effect of viscosity on the slug flow of two immiscible liquid phases in a microchannel was studied with high-speed imaging techniques. It was found that a higher dispersed-phase viscosity quickened the flow pattern transition from slug flow to parallel flow and resulted in smaller slugs. A modified capillary number representing the mutual effects of the viscosities of the continuous phase and the dispersed phase was proposed for predicting the slug sizes in microchannels. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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